Cooling jacket



FIG. 1 is a front, top, and left side perspective view of a cooling jacket, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view the left side view being a mirror image thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is reference view showing in use thereof.

The broken line showing of the environment in FIG. 7 is for illustrative purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for a cooling jacket, as shown and described. 